U0302high severityNetwork
Software Incompatibility with TCM
on 2000 BMW 528i 2.8L I6 M52 · RWD
What this code means
The data from the Transmission Control Module is incompatible or corrupted.
Symptoms
- Transmission shift problems
- Harsh shifting
- Check Engine Light
- Transmission warning light
Common causes
- TCM software mismatch
- TCM programming incomplete
- Wrong TCM calibration
- TCM-ECM version conflict
Diagnostic steps
- Check TCM software version
- Compare ECM and TCM software compatibility
- Reprogram TCM
- Check for TSBs
- Verify correct calibration file
Repair notes
Reprogram TCM with correct calibration that matches the ECM software version.
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Other Network codes on this vehicle
CC-ID-181
System Check Failed
CC-ID-207
Central Electronics Failure, Stop Vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High